From ef4bed9cdec8fa257e3c18a416afaec372d3e44f Mon Sep 17 00:00:00 2001
From: Alexandros Couloumbis <alex@ozo.com>
Date: Thu, 23 Feb 2017 13:17:39 +0200
Subject: [PATCH 1/2] add autogen.sh script

---
 autogen.sh | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100755 autogen.sh

diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..9fdcdce
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+set -e
+
+case "$(uname)" in
+    Darwin)
+        LIBTOOLIZE=${LIBTOOLIZE:-glibtoolize}
+        ;;
+    *)
+        LIBTOOLIZE=${LIBTOOLIZE:-libtoolize}
+        ;;
+esac
+AUTORECONF=${AUTORECONF:-autoreconf}
+ACLOCAL=${ACLOCAL:-aclocal}
+AUTOCONF=${AUTOCONF:-autoconf}
+AUTOHEADER=${AUTOHEADER:-autoheader}
+AUTOMAKE=${AUTOMAKE:-automake}
+
+# Check we have all tools installed
+check_command() {
+    command -v "${1}" > /dev/null 2>&1 || {
+        >&2 echo "autogen.sh: could not find \`$1'. \`$1' is required to run autogen.sh."
+        exit 1
+    }
+}
+check_command "$LIBTOOLIZE"
+check_command "$AUTORECONF"
+check_command "$ACLOCAL"
+check_command "$AUTOCONF"
+check_command "$AUTOHEADER"
+check_command "$AUTOMAKE"
+
+# Absence of pkg-config or misconfiguration can make some odd error
+# messages, we check if it is installed correctly. See:
+#  https://blogs.oracle.com/mandy/entry/autoconf_weirdness
+#
+# We cannot just check for pkg-config command, we need to check for
+# PKG_* macros. The pkg-config command can be defined in ./configure,
+# we cannot tell anything when not present.
+check_pkg_config() {
+    grep -q '^AC_DEFUN.*PKG_CHECK_MODULES' aclocal.m4 || {
+        cat <<EOF >&2
+autogen.sh: could not find PKG_CHECK_MODULES macro.
+
+  Either pkg-config is not installed on your system or
+  \`pkg.m4' is missing or not found by aclocal.
+
+  If \`pkg.m4' is installed at an unusual location, re-run
+  \`autogen.sh' by setting \`ACLOCAL_FLAGS':
+
+    ACLOCAL_FLAGS="-I <prefix>/share/aclocal" ./autogen.sh
+
+EOF
+        exit 1
+    }
+}
+
+echo "autogen.sh: reconfigure with autoreconf"
+${AUTORECONF} -vif -I m4 || {
+    echo "autogen.sh: autoreconf has failed ($?), let's do it manually"
+    [ -f ./configure.ac ] || [ -f ./configure.in ] || continue
+    echo "autogen.sh: configure `basename $PWD`"
+    ${ACLOCAL} -I m4 ${ACLOCAL_FLAGS}
+    check_pkg_config
+    ${LIBTOOLIZE} --automake --copy --force
+    ${ACLOCAL} -I m4 ${ACLOCAL_FLAGS}
+    ${AUTOCONF} --force
+    ${AUTOHEADER}
+    ${AUTOMAKE} --add-missing --copy --force-missing
+}
+
+echo "autogen.sh: for the next step, run './configure' [or './configure --help' to check available options]"
+
+exit 0

From 3a073cc16d808d4f11687eb68c04f696f8cee2e6 Mon Sep 17 00:00:00 2001
From: Alexandros Couloumbis <alex@ozo.com>
Date: Thu, 23 Feb 2017 13:18:27 +0200
Subject: [PATCH 2/2] fix compatibility issues. code now correctly compiles
 under both glibc & musl-libc systems

---
 common.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/common.h b/common.h
index 23f35ac..aedf1af 100644
--- a/common.h
+++ b/common.h
@@ -32,7 +32,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/un.h>
@@ -176,10 +176,10 @@ struct ip6_ext {
 
 /* following lines are copy from unistd.h in Linux for avoidance warnings in compilation */
 #if defined(HAVE_SETRESGID) && !defined(_GNU_SOURCE)
-extern int setresgid (__uid_t __ruid, __uid_t __euid, __uid_t __suid);
+extern int setresgid (uid_t __ruid, uid_t __euid, uid_t __suid);
 #endif
 #if defined(HAVE_SETRESUID) && !defined(_GNU_SOURCE)
-extern int setresuid (__uid_t __ruid, __uid_t __euid, __uid_t __suid);
+extern int setresuid (uid_t __ruid, uid_t __euid, uid_t __suid);
 #endif
 
 #endif /* _SFD_COMMON_H */